1

The Building of the Earth

1984-01-19

2

The Frozen World

1984-01-26

3

The Northern Forests

1984-02-02

4

Jungle

1984-02-16

5

Seas of Grass

1984-02-23

6

The Baking Deserts

1984-02-23

7

The Sky Above

1984-03-08

8

Sweet Fresh Water

1984-03-15

9

The Margins of the Land

1984-03-22

10

Worlds Apart

1984-03-29

11

The Open Ocean

1984-04-05

12

New Worlds

1984-04-12